|
|
017ff1 |
diff --git a/auth-pam.c b/auth-pam.c
|
|
|
017ff1 |
index d789bad..cd1a775 100644
|
|
|
017ff1 |
--- a/auth-pam.c
|
|
|
017ff1 |
+++ b/auth-pam.c
|
|
|
017ff1 |
@@ -1068,7 +1068,7 @@ is_pam_session_open(void)
|
|
|
f09e2e |
* during the ssh authentication process.
|
|
|
f09e2e |
*/
|
|
|
f09e2e |
int
|
|
|
f09e2e |
-do_pam_putenv(char *name, char *value)
|
|
|
f09e2e |
+do_pam_putenv(char *name, const char *value)
|
|
|
f09e2e |
{
|
|
|
f09e2e |
int ret = 1;
|
|
|
f09e2e |
#ifdef HAVE_PAM_PUTENV
|
|
|
017ff1 |
diff --git a/auth-pam.h b/auth-pam.h
|
|
|
017ff1 |
index a1a2b52..b109a5a 100644
|
|
|
017ff1 |
--- a/auth-pam.h
|
|
|
017ff1 |
+++ b/auth-pam.h
|
|
|
f09e2e |
@@ -38,7 +38,7 @@ void do_pam_session(void);
|
|
|
f09e2e |
void do_pam_set_tty(const char *);
|
|
|
f09e2e |
void do_pam_setcred(int );
|
|
|
f09e2e |
void do_pam_chauthtok(void);
|
|
|
f09e2e |
-int do_pam_putenv(char *, char *);
|
|
|
f09e2e |
+int do_pam_putenv(char *, const char *);
|
|
|
f09e2e |
char ** fetch_pam_environment(void);
|
|
|
f09e2e |
char ** fetch_pam_child_environment(void);
|
|
|
f09e2e |
void free_pam_environment(char **);
|
|
|
017ff1 |
diff --git a/auth.h b/auth.h
|
|
|
017ff1 |
index 124e597..4605588 100644
|
|
|
017ff1 |
--- a/auth.h
|
|
|
017ff1 |
+++ b/auth.h
|
|
|
f09e2e |
@@ -59,6 +59,9 @@ struct Authctxt {
|
|
|
f09e2e |
char *service;
|
|
|
f09e2e |
struct passwd *pw; /* set if 'valid' */
|
|
|
f09e2e |
char *style;
|
|
|
f09e2e |
+#ifdef WITH_SELINUX
|
|
|
f09e2e |
+ char *role;
|
|
|
f09e2e |
+#endif
|
|
|
f09e2e |
void *kbdintctxt;
|
|
|
f09e2e |
char *info; /* Extra info for next auth_log */
|
|
|
017ff1 |
#ifdef BSD_AUTH
|
|
|
017ff1 |
diff --git a/auth1.c b/auth1.c
|
|
|
017ff1 |
index 0f870b3..df040bb 100644
|
|
|
017ff1 |
--- a/auth1.c
|
|
|
017ff1 |
+++ b/auth1.c
|
|
|
f09e2e |
@@ -381,6 +381,9 @@ do_authentication(Authctxt *authctxt)
|
|
|
f09e2e |
{
|
|
|
f09e2e |
u_int ulen;
|
|
|
f09e2e |
char *user, *style = NULL;
|
|
|
f09e2e |
+#ifdef WITH_SELINUX
|
|
|
f09e2e |
+ char *role=NULL;
|
|
|
f09e2e |
+#endif
|
|
|
f09e2e |
|
|
|
f09e2e |
/* Get the name of the user that we wish to log in as. */
|
|
|
f09e2e |
packet_read_expect(SSH_CMSG_USER);
|
|
|
f09e2e |
@@ -389,11 +392,24 @@ do_authentication(Authctxt *authctxt)
|
|
|
f09e2e |
user = packet_get_cstring(&ulen);
|
|
|
f09e2e |
packet_check_eom();
|
|
|
f09e2e |
|
|
|
f09e2e |
+#ifdef WITH_SELINUX
|
|
|
f09e2e |
+ if ((role = strchr(user, '/')) != NULL)
|
|
|
f09e2e |
+ *role++ = '\0';
|
|
|
f09e2e |
+#endif
|
|
|
f09e2e |
+
|
|
|
f09e2e |
if ((style = strchr(user, ':')) != NULL)
|
|
|
f09e2e |
*style++ = '\0';
|
|
|
f09e2e |
+#ifdef WITH_SELINUX
|
|
|
f09e2e |
+ else
|
|
|
f09e2e |
+ if (role && (style = strchr(role, ':')) != NULL)
|
|
|
f09e2e |
+ *style++ = '\0';
|
|
|
f09e2e |
+#endif
|
|
|
f09e2e |
|
|
|
f09e2e |
authctxt->user = user;
|
|
|
f09e2e |
authctxt->style = style;
|
|
|
f09e2e |
+#ifdef WITH_SELINUX
|
|
|
f09e2e |
+ authctxt->role = role;
|
|
|
f09e2e |
+#endif
|
|
|
f09e2e |
|
|
|
f09e2e |
/* Verify that the user is a valid user. */
|
|
|
f09e2e |
if ((authctxt->pw = PRIVSEP(getpwnamallow(user))) != NULL)
|
|
|
017ff1 |
diff --git a/auth2-gss.c b/auth2-gss.c
|
|
|
017ff1 |
index c28a705..4756dd7 100644
|
|
|
017ff1 |
--- a/auth2-gss.c
|
|
|
017ff1 |
+++ b/auth2-gss.c
|
|
|
017ff1 |
@@ -251,6 +251,7 @@ input_gssapi_mic(int type, u_int32_t plen, void *ctxt)
|
|
|
f09e2e |
Authctxt *authctxt = ctxt;
|
|
|
f09e2e |
Gssctxt *gssctxt;
|
|
|
f09e2e |
int authenticated = 0;
|
|
|
f09e2e |
+ char *micuser;
|
|
|
f09e2e |
Buffer b;
|
|
|
f09e2e |
gss_buffer_desc mic, gssbuf;
|
|
|
f09e2e |
u_int len;
|
|
|
017ff1 |
@@ -263,7 +264,13 @@ input_gssapi_mic(int type, u_int32_t plen, void *ctxt)
|
|
|
f09e2e |
mic.value = packet_get_string(&len;;
|
|
|
f09e2e |
mic.length = len;
|
|
|
f09e2e |
|
|
|
f09e2e |
- ssh_gssapi_buildmic(&b, authctxt->user, authctxt->service,
|
|
|
f09e2e |
+#ifdef WITH_SELINUX
|
|
|
f09e2e |
+ if (authctxt->role && (strlen(authctxt->role) > 0))
|
|
|
f09e2e |
+ xasprintf(&micuser, "%s/%s", authctxt->user, authctxt->role);
|
|
|
f09e2e |
+ else
|
|
|
f09e2e |
+#endif
|
|
|
f09e2e |
+ micuser = authctxt->user;
|
|
|
f09e2e |
+ ssh_gssapi_buildmic(&b, micuser, authctxt->service,
|
|
|
f09e2e |
"gssapi-with-mic");
|
|
|
f09e2e |
|
|
|
f09e2e |
gssbuf.value = buffer_ptr(&b);
|
|
|
017ff1 |
@@ -275,6 +282,8 @@ input_gssapi_mic(int type, u_int32_t plen, void *ctxt)
|
|
|
f09e2e |
logit("GSSAPI MIC check failed");
|
|
|
f09e2e |
|
|
|
f09e2e |
buffer_free(&b);
|
|
|
f09e2e |
+ if (micuser != authctxt->user)
|
|
|
f09e2e |
+ free(micuser);
|
|
|
f09e2e |
free(mic.value);
|
|
|
f09e2e |
|
|
|
f09e2e |
authctxt->postponed = 0;
|
|
|
017ff1 |
diff --git a/auth2-hostbased.c b/auth2-hostbased.c
|
|
|
017ff1 |
index eca0069..95d678e 100644
|
|
|
017ff1 |
--- a/auth2-hostbased.c
|
|
|
017ff1 |
+++ b/auth2-hostbased.c
|
|
|
017ff1 |
@@ -112,7 +112,15 @@ userauth_hostbased(Authctxt *authctxt)
|
|
|
f09e2e |
buffer_put_string(&b, session_id2, session_id2_len);
|
|
|
f09e2e |
/* reconstruct packet */
|
|
|
f09e2e |
buffer_put_char(&b, SSH2_MSG_USERAUTH_REQUEST);
|
|
|
f09e2e |
- buffer_put_cstring(&b, authctxt->user);
|
|
|
f09e2e |
+#ifdef WITH_SELINUX
|
|
|
f09e2e |
+ if (authctxt->role) {
|
|
|
f09e2e |
+ buffer_put_int(&b, strlen(authctxt->user)+strlen(authctxt->role)+1);
|
|
|
f09e2e |
+ buffer_append(&b, authctxt->user, strlen(authctxt->user));
|
|
|
f09e2e |
+ buffer_put_char(&b, '/');
|
|
|
f09e2e |
+ buffer_append(&b, authctxt->role, strlen(authctxt->role));
|
|
|
f09e2e |
+ } else
|
|
|
f09e2e |
+#endif
|
|
|
f09e2e |
+ buffer_put_cstring(&b, authctxt->user);
|
|
|
f09e2e |
buffer_put_cstring(&b, service);
|
|
|
f09e2e |
buffer_put_cstring(&b, "hostbased");
|
|
|
f09e2e |
buffer_put_string(&b, pkalg, alen);
|
|
|
017ff1 |
diff --git a/auth2-pubkey.c b/auth2-pubkey.c
|
|
|
017ff1 |
index 749b11a..c0ae0d4 100644
|
|
|
017ff1 |
--- a/auth2-pubkey.c
|
|
|
017ff1 |
+++ b/auth2-pubkey.c
|
|
|
017ff1 |
@@ -133,9 +133,11 @@ userauth_pubkey(Authctxt *authctxt)
|
|
|
f09e2e |
}
|
|
|
f09e2e |
/* reconstruct packet */
|
|
|
f09e2e |
buffer_put_char(&b, SSH2_MSG_USERAUTH_REQUEST);
|
|
|
f09e2e |
- xasprintf(&userstyle, "%s%s%s", authctxt->user,
|
|
|
f09e2e |
+ xasprintf(&userstyle, "%s%s%s%s%s", authctxt->user,
|
|
|
f09e2e |
authctxt->style ? ":" : "",
|
|
|
f09e2e |
- authctxt->style ? authctxt->style : "");
|
|
|
f09e2e |
+ authctxt->style ? authctxt->style : "",
|
|
|
f09e2e |
+ authctxt->role ? "/" : "",
|
|
|
f09e2e |
+ authctxt->role ? authctxt->role : "");
|
|
|
f09e2e |
buffer_put_cstring(&b, userstyle);
|
|
|
f09e2e |
free(userstyle);
|
|
|
f09e2e |
buffer_put_cstring(&b,
|
|
|
017ff1 |
diff --git a/auth2.c b/auth2.c
|
|
|
017ff1 |
index a5490c0..5f4f26f 100644
|
|
|
017ff1 |
--- a/auth2.c
|
|
|
017ff1 |
+++ b/auth2.c
|
|
|
017ff1 |
@@ -215,6 +215,9 @@ input_userauth_request(int type, u_int32_t seq, void *ctxt)
|
|
|
f09e2e |
Authctxt *authctxt = ctxt;
|
|
|
f09e2e |
Authmethod *m = NULL;
|
|
|
f09e2e |
char *user, *service, *method, *style = NULL;
|
|
|
f09e2e |
+#ifdef WITH_SELINUX
|
|
|
f09e2e |
+ char *role = NULL;
|
|
|
f09e2e |
+#endif
|
|
|
f09e2e |
int authenticated = 0;
|
|
|
f09e2e |
|
|
|
f09e2e |
if (authctxt == NULL)
|
|
|
017ff1 |
@@ -226,6 +229,11 @@ input_userauth_request(int type, u_int32_t seq, void *ctxt)
|
|
|
f09e2e |
debug("userauth-request for user %s service %s method %s", user, service, method);
|
|
|
f09e2e |
debug("attempt %d failures %d", authctxt->attempt, authctxt->failures);
|
|
|
f09e2e |
|
|
|
f09e2e |
+#ifdef WITH_SELINUX
|
|
|
f09e2e |
+ if ((role = strchr(user, '/')) != NULL)
|
|
|
f09e2e |
+ *role++ = 0;
|
|
|
f09e2e |
+#endif
|
|
|
f09e2e |
+
|
|
|
f09e2e |
if ((style = strchr(user, ':')) != NULL)
|
|
|
f09e2e |
*style++ = 0;
|
|
|
f09e2e |
|
|
|
017ff1 |
@@ -251,8 +259,15 @@ input_userauth_request(int type, u_int32_t seq, void *ctxt)
|
|
|
f09e2e |
use_privsep ? " [net]" : "");
|
|
|
f09e2e |
authctxt->service = xstrdup(service);
|
|
|
f09e2e |
authctxt->style = style ? xstrdup(style) : NULL;
|
|
|
f09e2e |
- if (use_privsep)
|
|
|
f09e2e |
+#ifdef WITH_SELINUX
|
|
|
f09e2e |
+ authctxt->role = role ? xstrdup(role) : NULL;
|
|
|
f09e2e |
+#endif
|
|
|
f09e2e |
+ if (use_privsep) {
|
|
|
f09e2e |
mm_inform_authserv(service, style);
|
|
|
f09e2e |
+#ifdef WITH_SELINUX
|
|
|
f09e2e |
+ mm_inform_authrole(role);
|
|
|
f09e2e |
+#endif
|
|
|
f09e2e |
+ }
|
|
|
f09e2e |
userauth_banner();
|
|
|
f09e2e |
if (auth2_setup_methods_lists(authctxt) != 0)
|
|
|
f09e2e |
packet_disconnect("no authentication methods enabled");
|
|
|
017ff1 |
diff --git a/misc.c b/misc.c
|
|
|
017ff1 |
index e4c8c32..f31cd91 100644
|
|
|
017ff1 |
--- a/misc.c
|
|
|
017ff1 |
+++ b/misc.c
|
|
|
017ff1 |
@@ -430,6 +430,7 @@ char *
|
|
|
f09e2e |
colon(char *cp)
|
|
|
f09e2e |
{
|
|
|
f09e2e |
int flag = 0;
|
|
|
f09e2e |
+ int start = 1;
|
|
|
f09e2e |
|
|
|
f09e2e |
if (*cp == ':') /* Leading colon is part of file name. */
|
|
|
f09e2e |
return NULL;
|
|
|
017ff1 |
@@ -445,6 +446,13 @@ colon(char *cp)
|
|
|
f09e2e |
return (cp);
|
|
|
f09e2e |
if (*cp == '/')
|
|
|
f09e2e |
return NULL;
|
|
|
f09e2e |
+ if (start) {
|
|
|
f09e2e |
+ /* Slash on beginning or after dots only denotes file name. */
|
|
|
f09e2e |
+ if (*cp == '/')
|
|
|
f09e2e |
+ return (0);
|
|
|
f09e2e |
+ if (*cp != '.')
|
|
|
f09e2e |
+ start = 0;
|
|
|
f09e2e |
+ }
|
|
|
f09e2e |
}
|
|
|
f09e2e |
return NULL;
|
|
|
f09e2e |
}
|
|
|
017ff1 |
diff --git a/monitor.c b/monitor.c
|
|
|
017ff1 |
index 531c4f9..229fada 100644
|
|
|
017ff1 |
--- a/monitor.c
|
|
|
017ff1 |
+++ b/monitor.c
|
|
|
017ff1 |
@@ -145,6 +145,9 @@ int mm_answer_sign(int, Buffer *);
|
|
|
f09e2e |
int mm_answer_pwnamallow(int, Buffer *);
|
|
|
f09e2e |
int mm_answer_auth2_read_banner(int, Buffer *);
|
|
|
f09e2e |
int mm_answer_authserv(int, Buffer *);
|
|
|
f09e2e |
+#ifdef WITH_SELINUX
|
|
|
f09e2e |
+int mm_answer_authrole(int, Buffer *);
|
|
|
f09e2e |
+#endif
|
|
|
f09e2e |
int mm_answer_authpassword(int, Buffer *);
|
|
|
f09e2e |
int mm_answer_bsdauthquery(int, Buffer *);
|
|
|
f09e2e |
int mm_answer_bsdauthrespond(int, Buffer *);
|
|
|
017ff1 |
@@ -219,6 +222,9 @@ struct mon_table mon_dispatch_proto20[] = {
|
|
|
f09e2e |
{MONITOR_REQ_SIGN, MON_ONCE, mm_answer_sign},
|
|
|
f09e2e |
{MONITOR_REQ_PWNAM, MON_ONCE, mm_answer_pwnamallow},
|
|
|
f09e2e |
{MONITOR_REQ_AUTHSERV, MON_ONCE, mm_answer_authserv},
|
|
|
f09e2e |
+#ifdef WITH_SELINUX
|
|
|
f09e2e |
+ {MONITOR_REQ_AUTHROLE, MON_ONCE, mm_answer_authrole},
|
|
|
f09e2e |
+#endif
|
|
|
f09e2e |
{MONITOR_REQ_AUTH2_READ_BANNER, MON_ONCE, mm_answer_auth2_read_banner},
|
|
|
f09e2e |
{MONITOR_REQ_AUTHPASSWORD, MON_AUTH, mm_answer_authpassword},
|
|
|
f09e2e |
#ifdef USE_PAM
|
|
|
017ff1 |
@@ -805,6 +811,9 @@ mm_answer_pwnamallow(int sock, Buffer *m)
|
|
|
f09e2e |
else {
|
|
|
f09e2e |
/* Allow service/style information on the auth context */
|
|
|
f09e2e |
monitor_permit(mon_dispatch, MONITOR_REQ_AUTHSERV, 1);
|
|
|
f09e2e |
+#ifdef WITH_SELINUX
|
|
|
f09e2e |
+ monitor_permit(mon_dispatch, MONITOR_REQ_AUTHROLE, 1);
|
|
|
f09e2e |
+#endif
|
|
|
f09e2e |
monitor_permit(mon_dispatch, MONITOR_REQ_AUTH2_READ_BANNER, 1);
|
|
|
f09e2e |
}
|
|
|
f09e2e |
#ifdef USE_PAM
|
|
|
017ff1 |
@@ -846,6 +855,25 @@ mm_answer_authserv(int sock, Buffer *m)
|
|
|
f09e2e |
return (0);
|
|
|
f09e2e |
}
|
|
|
f09e2e |
|
|
|
f09e2e |
+#ifdef WITH_SELINUX
|
|
|
f09e2e |
+int
|
|
|
f09e2e |
+mm_answer_authrole(int sock, Buffer *m)
|
|
|
f09e2e |
+{
|
|
|
f09e2e |
+ monitor_permit_authentications(1);
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ authctxt->role = buffer_get_string(m, NULL);
|
|
|
f09e2e |
+ debug3("%s: role=%s",
|
|
|
f09e2e |
+ __func__, authctxt->role);
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ if (strlen(authctxt->role) == 0) {
|
|
|
f09e2e |
+ free(authctxt->role);
|
|
|
f09e2e |
+ authctxt->role = NULL;
|
|
|
f09e2e |
+ }
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ return (0);
|
|
|
f09e2e |
+}
|
|
|
f09e2e |
+#endif
|
|
|
f09e2e |
+
|
|
|
f09e2e |
int
|
|
|
f09e2e |
mm_answer_authpassword(int sock, Buffer *m)
|
|
|
f09e2e |
{
|
|
|
017ff1 |
@@ -1220,7 +1248,7 @@ static int
|
|
|
f09e2e |
monitor_valid_userblob(u_char *data, u_int datalen)
|
|
|
f09e2e |
{
|
|
|
f09e2e |
Buffer b;
|
|
|
f09e2e |
- char *p, *userstyle;
|
|
|
f09e2e |
+ char *p, *r, *userstyle;
|
|
|
f09e2e |
u_int len;
|
|
|
f09e2e |
int fail = 0;
|
|
|
f09e2e |
|
|
|
017ff1 |
@@ -1246,6 +1274,8 @@ monitor_valid_userblob(u_char *data, u_int datalen)
|
|
|
f09e2e |
if (buffer_get_char(&b) != SSH2_MSG_USERAUTH_REQUEST)
|
|
|
f09e2e |
fail++;
|
|
|
f09e2e |
p = buffer_get_cstring(&b, NULL);
|
|
|
f09e2e |
+ if ((r = strchr(p, '/')) != NULL)
|
|
|
f09e2e |
+ *r = '\0';
|
|
|
f09e2e |
xasprintf(&userstyle, "%s%s%s", authctxt->user,
|
|
|
f09e2e |
authctxt->style ? ":" : "",
|
|
|
f09e2e |
authctxt->style ? authctxt->style : "");
|
|
|
017ff1 |
@@ -1281,7 +1311,7 @@ monitor_valid_hostbasedblob(u_char *data, u_int datalen, char *cuser,
|
|
|
f09e2e |
char *chost)
|
|
|
f09e2e |
{
|
|
|
f09e2e |
Buffer b;
|
|
|
f09e2e |
- char *p, *userstyle;
|
|
|
f09e2e |
+ char *p, *r, *userstyle;
|
|
|
f09e2e |
u_int len;
|
|
|
f09e2e |
int fail = 0;
|
|
|
f09e2e |
|
|
|
017ff1 |
@@ -1298,6 +1328,8 @@ monitor_valid_hostbasedblob(u_char *data, u_int datalen, char *cuser,
|
|
|
f09e2e |
if (buffer_get_char(&b) != SSH2_MSG_USERAUTH_REQUEST)
|
|
|
f09e2e |
fail++;
|
|
|
f09e2e |
p = buffer_get_cstring(&b, NULL);
|
|
|
f09e2e |
+ if ((r = strchr(p, '/')) != NULL)
|
|
|
f09e2e |
+ *r = '\0';
|
|
|
f09e2e |
xasprintf(&userstyle, "%s%s%s", authctxt->user,
|
|
|
f09e2e |
authctxt->style ? ":" : "",
|
|
|
f09e2e |
authctxt->style ? authctxt->style : "");
|
|
|
017ff1 |
diff --git a/monitor.h b/monitor.h
|
|
|
017ff1 |
index 5bc41b5..20e2b4a 100644
|
|
|
017ff1 |
--- a/monitor.h
|
|
|
017ff1 |
+++ b/monitor.h
|
|
|
017ff1 |
@@ -57,6 +57,10 @@ enum monitor_reqtype {
|
|
|
017ff1 |
MONITOR_REQ_GSSCHECKMIC = 48, MONITOR_ANS_GSSCHECKMIC = 49,
|
|
|
017ff1 |
MONITOR_REQ_TERM = 50,
|
|
|
017ff1 |
|
|
|
f09e2e |
+#ifdef WITH_SELINUX
|
|
|
f09e2e |
+ MONITOR_REQ_AUTHROLE = 80,
|
|
|
f09e2e |
+#endif
|
|
|
017ff1 |
+
|
|
|
f09e2e |
MONITOR_REQ_PAM_START = 100,
|
|
|
f09e2e |
MONITOR_REQ_PAM_ACCOUNT = 102, MONITOR_ANS_PAM_ACCOUNT = 103,
|
|
|
017ff1 |
MONITOR_REQ_PAM_INIT_CTX = 104, MONITOR_ANS_PAM_INIT_CTX = 105,
|
|
|
017ff1 |
diff --git a/monitor_wrap.c b/monitor_wrap.c
|
|
|
017ff1 |
index 1a47e41..d1b6d99 100644
|
|
|
017ff1 |
--- a/monitor_wrap.c
|
|
|
017ff1 |
+++ b/monitor_wrap.c
|
|
|
017ff1 |
@@ -336,6 +336,25 @@ mm_inform_authserv(char *service, char *style)
|
|
|
f09e2e |
buffer_free(&m);
|
|
|
f09e2e |
}
|
|
|
f09e2e |
|
|
|
f09e2e |
+/* Inform the privileged process about role */
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+#ifdef WITH_SELINUX
|
|
|
f09e2e |
+void
|
|
|
f09e2e |
+mm_inform_authrole(char *role)
|
|
|
f09e2e |
+{
|
|
|
f09e2e |
+ Buffer m;
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ debug3("%s entering", __func__);
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ buffer_init(&m);
|
|
|
f09e2e |
+ buffer_put_cstring(&m, role ? role : "");
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ mm_request_send(pmonitor->m_recvfd, MONITOR_REQ_AUTHROLE, &m);
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ buffer_free(&m);
|
|
|
f09e2e |
+}
|
|
|
f09e2e |
+#endif
|
|
|
f09e2e |
+
|
|
|
f09e2e |
/* Do the password authentication */
|
|
|
f09e2e |
int
|
|
|
f09e2e |
mm_auth_password(Authctxt *authctxt, char *password)
|
|
|
017ff1 |
diff --git a/monitor_wrap.h b/monitor_wrap.h
|
|
|
017ff1 |
index 18c2501..9d5e5ba 100644
|
|
|
017ff1 |
--- a/monitor_wrap.h
|
|
|
017ff1 |
+++ b/monitor_wrap.h
|
|
|
f09e2e |
@@ -42,6 +42,9 @@ int mm_is_monitor(void);
|
|
|
f09e2e |
DH *mm_choose_dh(int, int, int);
|
|
|
f09e2e |
int mm_key_sign(Key *, u_char **, u_int *, u_char *, u_int);
|
|
|
f09e2e |
void mm_inform_authserv(char *, char *);
|
|
|
f09e2e |
+#ifdef WITH_SELINUX
|
|
|
f09e2e |
+void mm_inform_authrole(char *);
|
|
|
f09e2e |
+#endif
|
|
|
f09e2e |
struct passwd *mm_getpwnamallow(const char *);
|
|
|
f09e2e |
char *mm_auth2_read_banner(void);
|
|
|
f09e2e |
int mm_auth_password(struct Authctxt *, char *);
|
|
|
017ff1 |
diff --git a/openbsd-compat/Makefile.in b/openbsd-compat/Makefile.in
|
|
|
017ff1 |
index 6ecfb93..b912dbe 100644
|
|
|
017ff1 |
--- a/openbsd-compat/Makefile.in
|
|
|
017ff1 |
+++ b/openbsd-compat/Makefile.in
|
|
|
017ff1 |
@@ -20,7 +20,7 @@ OPENBSD=base64.o basename.o bcrypt_pbkdf.o bindresvport.o blowfish.o daemon.o di
|
|
|
f09e2e |
|
|
|
017ff1 |
COMPAT=arc4random.o bsd-asprintf.o bsd-closefrom.o bsd-cray.o bsd-cygwin_util.o bsd-getpeereid.o getrrsetbyname-ldns.o bsd-misc.o bsd-nextstep.o bsd-openpty.o bsd-poll.o bsd-setres_id.o bsd-snprintf.o bsd-statvfs.o bsd-waitpid.o fake-rfc2553.o openssl-compat.o xmmap.o xcrypt.o
|
|
|
f09e2e |
|
|
|
f09e2e |
-PORTS=port-aix.o port-irix.o port-linux.o port-solaris.o port-tun.o port-uw.o
|
|
|
017ff1 |
+PORTS=port-aix.o port-irix.o port-linux.o port-linux-sshd.o port-solaris.o port-tun.o port-uw.o
|
|
|
f09e2e |
|
|
|
f09e2e |
.c.o:
|
|
|
f09e2e |
$(CC) $(CFLAGS) $(CPPFLAGS) -c $<
|
|
|
017ff1 |
diff --git a/openbsd-compat/port-linux-sshd.c b/openbsd-compat/port-linux-sshd.c
|
|
|
017ff1 |
new file mode 100644
|
|
|
017ff1 |
index 0000000..c18524e
|
|
|
017ff1 |
--- /dev/null
|
|
|
017ff1 |
+++ b/openbsd-compat/port-linux-sshd.c
|
|
|
017ff1 |
@@ -0,0 +1,414 @@
|
|
|
017ff1 |
+/*
|
|
|
017ff1 |
+ * Copyright (c) 2005 Daniel Walsh <dwalsh@redhat.com>
|
|
|
017ff1 |
+ * Copyright (c) 2014 Petr Lautrbach <plautrba@redhat.com>
|
|
|
017ff1 |
+ *
|
|
|
017ff1 |
+ * Permission to use, copy, modify, and distribute this software for any
|
|
|
017ff1 |
+ * purpose with or without fee is hereby granted, provided that the above
|
|
|
017ff1 |
+ * copyright notice and this permission notice appear in all copies.
|
|
|
017ff1 |
+ *
|
|
|
017ff1 |
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
|
|
|
017ff1 |
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
|
|
|
017ff1 |
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
|
|
|
017ff1 |
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
|
|
|
017ff1 |
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
|
|
|
017ff1 |
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
|
|
|
017ff1 |
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
|
017ff1 |
+ */
|
|
|
017ff1 |
+
|
|
|
017ff1 |
+/*
|
|
|
017ff1 |
+ * Linux-specific portability code - just SELinux support for sshd at present
|
|
|
017ff1 |
+ */
|
|
|
017ff1 |
+
|
|
|
017ff1 |
+#include "includes.h"
|
|
|
017ff1 |
+
|
|
|
017ff1 |
+#if defined(WITH_SELINUX) || defined(LINUX_OOM_ADJUST)
|
|
|
017ff1 |
+#include <errno.h>
|
|
|
017ff1 |
+#include <stdarg.h>
|
|
|
017ff1 |
+#include <string.h>
|
|
|
017ff1 |
+#include <stdio.h>
|
|
|
017ff1 |
+
|
|
|
017ff1 |
+#include "log.h"
|
|
|
017ff1 |
+#include "xmalloc.h"
|
|
|
f09e2e |
+#include "servconf.h"
|
|
|
017ff1 |
+#include "port-linux.h"
|
|
|
f09e2e |
+#include "key.h"
|
|
|
f09e2e |
+#include "hostfile.h"
|
|
|
f09e2e |
+#include "auth.h"
|
|
|
017ff1 |
+
|
|
|
017ff1 |
+#ifdef WITH_SELINUX
|
|
|
017ff1 |
+#include <selinux/selinux.h>
|
|
|
017ff1 |
+#include <selinux/flask.h>
|
|
|
f09e2e |
+#include <selinux/context.h>
|
|
|
017ff1 |
+#include <selinux/get_context_list.h>
|
|
|
f09e2e |
+#include <selinux/get_default_type.h>
|
|
|
f09e2e |
+#include <selinux/av_permissions.h>
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+#ifdef HAVE_LINUX_AUDIT
|
|
|
f09e2e |
+#include <libaudit.h>
|
|
|
f09e2e |
+#include <unistd.h>
|
|
|
f09e2e |
+#endif
|
|
|
017ff1 |
+
|
|
|
f09e2e |
+extern ServerOptions options;
|
|
|
f09e2e |
+extern Authctxt *the_authctxt;
|
|
|
f09e2e |
+extern int inetd_flag;
|
|
|
f09e2e |
+extern int rexeced_flag;
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+/* Send audit message */
|
|
|
f09e2e |
+static int
|
|
|
017ff1 |
+sshd_selinux_send_audit_message(int success, security_context_t default_context,
|
|
|
f09e2e |
+ security_context_t selected_context)
|
|
|
017ff1 |
+{
|
|
|
f09e2e |
+ int rc=0;
|
|
|
f09e2e |
+#ifdef HAVE_LINUX_AUDIT
|
|
|
f09e2e |
+ char *msg = NULL;
|
|
|
f09e2e |
+ int audit_fd = audit_open();
|
|
|
f09e2e |
+ security_context_t default_raw=NULL;
|
|
|
f09e2e |
+ security_context_t selected_raw=NULL;
|
|
|
f09e2e |
+ rc = -1;
|
|
|
f09e2e |
+ if (audit_fd < 0) {
|
|
|
f09e2e |
+ if (errno == EINVAL || errno == EPROTONOSUPPORT ||
|
|
|
f09e2e |
+ errno == EAFNOSUPPORT)
|
|
|
f09e2e |
+ return 0; /* No audit support in kernel */
|
|
|
f09e2e |
+ error("Error connecting to audit system.");
|
|
|
f09e2e |
+ return rc;
|
|
|
f09e2e |
+ }
|
|
|
f09e2e |
+ if (selinux_trans_to_raw_context(default_context, &default_raw) < 0) {
|
|
|
f09e2e |
+ error("Error translating default context.");
|
|
|
f09e2e |
+ default_raw = NULL;
|
|
|
f09e2e |
+ }
|
|
|
f09e2e |
+ if (selinux_trans_to_raw_context(selected_context, &selected_raw) < 0) {
|
|
|
f09e2e |
+ error("Error translating selected context.");
|
|
|
f09e2e |
+ selected_raw = NULL;
|
|
|
f09e2e |
+ }
|
|
|
f09e2e |
+ if (asprintf(&msg, "sshd: default-context=%s selected-context=%s",
|
|
|
f09e2e |
+ default_raw ? default_raw : (default_context ? default_context: "?"),
|
|
|
f09e2e |
+ selected_context ? selected_raw : (selected_context ? selected_context :"?")) < 0) {
|
|
|
f09e2e |
+ error("Error allocating memory.");
|
|
|
f09e2e |
+ goto out;
|
|
|
f09e2e |
+ }
|
|
|
f09e2e |
+ if (audit_log_user_message(audit_fd, AUDIT_USER_ROLE_CHANGE,
|
|
|
f09e2e |
+ msg, NULL, NULL, NULL, success) <= 0) {
|
|
|
f09e2e |
+ error("Error sending audit message.");
|
|
|
f09e2e |
+ goto out;
|
|
|
f09e2e |
+ }
|
|
|
f09e2e |
+ rc = 0;
|
|
|
f09e2e |
+ out:
|
|
|
f09e2e |
+ free(msg);
|
|
|
f09e2e |
+ freecon(default_raw);
|
|
|
f09e2e |
+ freecon(selected_raw);
|
|
|
f09e2e |
+ close(audit_fd);
|
|
|
f09e2e |
+#endif
|
|
|
f09e2e |
+ return rc;
|
|
|
f09e2e |
+}
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+static int
|
|
|
f09e2e |
+mls_range_allowed(security_context_t src, security_context_t dst)
|
|
|
f09e2e |
+{
|
|
|
f09e2e |
+ struct av_decision avd;
|
|
|
f09e2e |
+ int retval;
|
|
|
f09e2e |
+ unsigned int bit = CONTEXT__CONTAINS;
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ debug("%s: src:%s dst:%s", __func__, src, dst);
|
|
|
f09e2e |
+ retval = security_compute_av(src, dst, SECCLASS_CONTEXT, bit, &avd);
|
|
|
f09e2e |
+ if (retval || ((bit & avd.allowed) != bit))
|
|
|
f09e2e |
+ return 0;
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ return 1;
|
|
|
f09e2e |
+}
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+static int
|
|
|
f09e2e |
+get_user_context(const char *sename, const char *role, const char *lvl,
|
|
|
f09e2e |
+ security_context_t *sc) {
|
|
|
f09e2e |
+#ifdef HAVE_GET_DEFAULT_CONTEXT_WITH_LEVEL
|
|
|
f09e2e |
+ if (lvl == NULL || lvl[0] == '\0' || get_default_context_with_level(sename, lvl, NULL, sc) != 0) {
|
|
|
f09e2e |
+ /* User may have requested a level completely outside of his
|
|
|
f09e2e |
+ allowed range. We get a context just for auditing as the
|
|
|
f09e2e |
+ range check below will certainly fail for default context. */
|
|
|
f09e2e |
+#endif
|
|
|
f09e2e |
+ if (get_default_context(sename, NULL, sc) != 0) {
|
|
|
f09e2e |
+ *sc = NULL;
|
|
|
f09e2e |
+ return -1;
|
|
|
f09e2e |
+ }
|
|
|
f09e2e |
+#ifdef HAVE_GET_DEFAULT_CONTEXT_WITH_LEVEL
|
|
|
f09e2e |
+ }
|
|
|
f09e2e |
+#endif
|
|
|
f09e2e |
+ if (role != NULL && role[0]) {
|
|
|
f09e2e |
+ context_t con;
|
|
|
f09e2e |
+ char *type=NULL;
|
|
|
f09e2e |
+ if (get_default_type(role, &type) != 0) {
|
|
|
f09e2e |
+ error("get_default_type: failed to get default type for '%s'",
|
|
|
f09e2e |
+ role);
|
|
|
f09e2e |
+ goto out;
|
|
|
f09e2e |
+ }
|
|
|
f09e2e |
+ con = context_new(*sc);
|
|
|
f09e2e |
+ if (!con) {
|
|
|
f09e2e |
+ goto out;
|
|
|
f09e2e |
+ }
|
|
|
f09e2e |
+ context_role_set(con, role);
|
|
|
f09e2e |
+ context_type_set(con, type);
|
|
|
f09e2e |
+ freecon(*sc);
|
|
|
f09e2e |
+ *sc = strdup(context_str(con));
|
|
|
f09e2e |
+ context_free(con);
|
|
|
017ff1 |
+ if (!*sc)
|
|
|
f09e2e |
+ return -1;
|
|
|
f09e2e |
+ }
|
|
|
f09e2e |
+#ifdef HAVE_GET_DEFAULT_CONTEXT_WITH_LEVEL
|
|
|
f09e2e |
+ if (lvl != NULL && lvl[0]) {
|
|
|
f09e2e |
+ /* verify that the requested range is obtained */
|
|
|
f09e2e |
+ context_t con;
|
|
|
f09e2e |
+ security_context_t obtained_raw;
|
|
|
f09e2e |
+ security_context_t requested_raw;
|
|
|
f09e2e |
+ con = context_new(*sc);
|
|
|
f09e2e |
+ if (!con) {
|
|
|
f09e2e |
+ goto out;
|
|
|
f09e2e |
+ }
|
|
|
f09e2e |
+ context_range_set(con, lvl);
|
|
|
f09e2e |
+ if (selinux_trans_to_raw_context(*sc, &obtained_raw) < 0) {
|
|
|
f09e2e |
+ context_free(con);
|
|
|
f09e2e |
+ goto out;
|
|
|
f09e2e |
+ }
|
|
|
f09e2e |
+ if (selinux_trans_to_raw_context(context_str(con), &requested_raw) < 0) {
|
|
|
f09e2e |
+ freecon(obtained_raw);
|
|
|
f09e2e |
+ context_free(con);
|
|
|
f09e2e |
+ goto out;
|
|
|
f09e2e |
+ }
|
|
|
017ff1 |
+
|
|
|
f09e2e |
+ debug("get_user_context: obtained context '%s' requested context '%s'",
|
|
|
f09e2e |
+ obtained_raw, requested_raw);
|
|
|
f09e2e |
+ if (strcmp(obtained_raw, requested_raw)) {
|
|
|
f09e2e |
+ /* set the context to the real requested one but fail */
|
|
|
f09e2e |
+ freecon(requested_raw);
|
|
|
f09e2e |
+ freecon(obtained_raw);
|
|
|
f09e2e |
+ freecon(*sc);
|
|
|
f09e2e |
+ *sc = strdup(context_str(con));
|
|
|
f09e2e |
+ context_free(con);
|
|
|
f09e2e |
+ return -1;
|
|
|
f09e2e |
+ }
|
|
|
f09e2e |
+ freecon(requested_raw);
|
|
|
f09e2e |
+ freecon(obtained_raw);
|
|
|
f09e2e |
+ context_free(con);
|
|
|
017ff1 |
+ }
|
|
|
f09e2e |
+#endif
|
|
|
f09e2e |
+ return 0;
|
|
|
f09e2e |
+ out:
|
|
|
f09e2e |
+ freecon(*sc);
|
|
|
f09e2e |
+ *sc = NULL;
|
|
|
f09e2e |
+ return -1;
|
|
|
f09e2e |
+}
|
|
|
017ff1 |
+
|
|
|
f09e2e |
+static void
|
|
|
f09e2e |
+ssh_selinux_get_role_level(char **role, const char **level)
|
|
|
f09e2e |
+{
|
|
|
f09e2e |
+ *role = NULL;
|
|
|
f09e2e |
+ *level = NULL;
|
|
|
f09e2e |
+ if (the_authctxt) {
|
|
|
f09e2e |
+ if (the_authctxt->role != NULL) {
|
|
|
f09e2e |
+ char *slash;
|
|
|
f09e2e |
+ *role = xstrdup(the_authctxt->role);
|
|
|
f09e2e |
+ if ((slash = strchr(*role, '/')) != NULL) {
|
|
|
f09e2e |
+ *slash = '\0';
|
|
|
f09e2e |
+ *level = slash + 1;
|
|
|
f09e2e |
+ }
|
|
|
f09e2e |
+ }
|
|
|
f09e2e |
+ }
|
|
|
017ff1 |
+}
|
|
|
017ff1 |
+
|
|
|
017ff1 |
+/* Return the default security context for the given username */
|
|
|
017ff1 |
+static int
|
|
|
017ff1 |
+sshd_selinux_getctxbyname(char *pwname,
|
|
|
f09e2e |
+ security_context_t *default_sc, security_context_t *user_sc)
|
|
|
017ff1 |
+{
|
|
|
f09e2e |
+ char *sename, *lvl;
|
|
|
f09e2e |
+ char *role;
|
|
|
f09e2e |
+ const char *reqlvl;
|
|
|
f09e2e |
+ int r = 0;
|
|
|
f09e2e |
+ context_t con = NULL;
|
|
|
017ff1 |
+
|
|
|
f09e2e |
+ ssh_selinux_get_role_level(&role, &reqlvl);
|
|
|
017ff1 |
+
|
|
|
017ff1 |
+#ifdef HAVE_GETSEUSERBYNAME
|
|
|
f09e2e |
+ if ((r=getseuserbyname(pwname, &sename, &lvl)) != 0) {
|
|
|
f09e2e |
+ sename = NULL;
|
|
|
f09e2e |
+ lvl = NULL;
|
|
|
f09e2e |
+ }
|
|
|
017ff1 |
+#else
|
|
|
017ff1 |
+ sename = pwname;
|
|
|
f09e2e |
+ lvl = "";
|
|
|
017ff1 |
+#endif
|
|
|
017ff1 |
+
|
|
|
f09e2e |
+ if (r == 0) {
|
|
|
017ff1 |
+#ifdef HAVE_GET_DEFAULT_CONTEXT_WITH_LEVEL
|
|
|
f09e2e |
+ r = get_default_context_with_level(sename, lvl, NULL, default_sc);
|
|
|
017ff1 |
+#else
|
|
|
f09e2e |
+ r = get_default_context(sename, NULL, default_sc);
|
|
|
017ff1 |
+#endif
|
|
|
f09e2e |
+ }
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ if (r == 0) {
|
|
|
f09e2e |
+ /* If launched from xinetd, we must use current level */
|
|
|
f09e2e |
+ if (inetd_flag && !rexeced_flag) {
|
|
|
f09e2e |
+ security_context_t sshdsc=NULL;
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ if (getcon_raw(&sshdsc) < 0)
|
|
|
f09e2e |
+ fatal("failed to allocate security context");
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ if ((con=context_new(sshdsc)) == NULL)
|
|
|
f09e2e |
+ fatal("failed to allocate selinux context");
|
|
|
f09e2e |
+ reqlvl = context_range_get(con);
|
|
|
f09e2e |
+ freecon(sshdsc);
|
|
|
f09e2e |
+ if (reqlvl !=NULL && lvl != NULL && strcmp(reqlvl, lvl) == 0)
|
|
|
f09e2e |
+ /* we actually don't change level */
|
|
|
f09e2e |
+ reqlvl = "";
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ debug("%s: current connection level '%s'", __func__, reqlvl);
|
|
|
017ff1 |
+
|
|
|
017ff1 |
+ }
|
|
|
017ff1 |
+
|
|
|
f09e2e |
+ if ((reqlvl != NULL && reqlvl[0]) || (role != NULL && role[0])) {
|
|
|
f09e2e |
+ r = get_user_context(sename, role, reqlvl, user_sc);
|
|
|
017ff1 |
+
|
|
|
f09e2e |
+ if (r == 0 && reqlvl != NULL && reqlvl[0]) {
|
|
|
f09e2e |
+ security_context_t default_level_sc = *default_sc;
|
|
|
f09e2e |
+ if (role != NULL && role[0]) {
|
|
|
f09e2e |
+ if (get_user_context(sename, role, lvl, &default_level_sc) < 0)
|
|
|
f09e2e |
+ default_level_sc = *default_sc;
|
|
|
f09e2e |
+ }
|
|
|
f09e2e |
+ /* verify that the requested range is contained in the user range */
|
|
|
f09e2e |
+ if (mls_range_allowed(default_level_sc, *user_sc)) {
|
|
|
f09e2e |
+ logit("permit MLS level %s (user range %s)", reqlvl, lvl);
|
|
|
f09e2e |
+ } else {
|
|
|
f09e2e |
+ r = -1;
|
|
|
f09e2e |
+ error("deny MLS level %s (user range %s)", reqlvl, lvl);
|
|
|
f09e2e |
+ }
|
|
|
f09e2e |
+ if (default_level_sc != *default_sc)
|
|
|
f09e2e |
+ freecon(default_level_sc);
|
|
|
f09e2e |
+ }
|
|
|
f09e2e |
+ } else {
|
|
|
f09e2e |
+ *user_sc = *default_sc;
|
|
|
f09e2e |
+ }
|
|
|
f09e2e |
+ }
|
|
|
f09e2e |
+ if (r != 0) {
|
|
|
f09e2e |
+ error("%s: Failed to get default SELinux security "
|
|
|
f09e2e |
+ "context for %s", __func__, pwname);
|
|
|
017ff1 |
+ }
|
|
|
017ff1 |
+
|
|
|
017ff1 |
+#ifdef HAVE_GETSEUSERBYNAME
|
|
|
017ff1 |
+ free(sename);
|
|
|
017ff1 |
+ free(lvl);
|
|
|
017ff1 |
+#endif
|
|
|
017ff1 |
+
|
|
|
f09e2e |
+ if (role != NULL)
|
|
|
f09e2e |
+ free(role);
|
|
|
f09e2e |
+ if (con)
|
|
|
f09e2e |
+ context_free(con);
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ return (r);
|
|
|
f09e2e |
+}
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+/* Setup environment variables for pam_selinux */
|
|
|
f09e2e |
+static int
|
|
|
017ff1 |
+sshd_selinux_setup_pam_variables(void)
|
|
|
f09e2e |
+{
|
|
|
f09e2e |
+ const char *reqlvl;
|
|
|
f09e2e |
+ char *role;
|
|
|
f09e2e |
+ char *use_current;
|
|
|
f09e2e |
+ int rv;
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ debug3("%s: setting execution context", __func__);
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ ssh_selinux_get_role_level(&role, &reqlvl);
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ rv = do_pam_putenv("SELINUX_ROLE_REQUESTED", role ? role : "");
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ if (inetd_flag && !rexeced_flag) {
|
|
|
f09e2e |
+ use_current = "1";
|
|
|
f09e2e |
+ } else {
|
|
|
f09e2e |
+ use_current = "";
|
|
|
f09e2e |
+ rv = rv || do_pam_putenv("SELINUX_LEVEL_REQUESTED", reqlvl ? reqlvl: "");
|
|
|
f09e2e |
+ }
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ rv = rv || do_pam_putenv("SELINUX_USE_CURRENT_RANGE", use_current);
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ if (role != NULL)
|
|
|
f09e2e |
+ free(role);
|
|
|
f09e2e |
+
|
|
|
f09e2e |
+ return rv;
|
|
|
017ff1 |
+}
|
|
|
017ff1 |
+
|
|
|
017ff1 |
+/* Set the execution context to the default for the specified user */
|
|
|
017ff1 |
+void
|
|
|
017ff1 |
+sshd_selinux_setup_exec_context(char *pwname)
|
|
|
017ff1 |
+{
|
|
|
017ff1 |
+ security_context_t user_ctx = NULL;
|
|
|
f09e2e |
+ int r = 0;
|
|
|
f09e2e |
+ security_context_t default_ctx = NULL;
|
|
|
017ff1 |
+
|
|
|
017ff1 |
+ if (!ssh_selinux_enabled())
|
|
|
017ff1 |
+ return;
|
|
|
017ff1 |
+
|
|
|
f09e2e |
+ if (options.use_pam) {
|
|
|
f09e2e |
+ /* do not compute context, just setup environment for pam_selinux */
|
|
|
017ff1 |
+ if (sshd_selinux_setup_pam_variables()) {
|
|
|
f09e2e |
+ switch (security_getenforce()) {
|
|
|
f09e2e |
+ case -1:
|
|
|
f09e2e |
+ fatal("%s: security_getenforce() failed", __func__);
|
|
|
f09e2e |
+ case 0:
|
|
|
f09e2e |
+ error("%s: SELinux PAM variable setup failure. Continuing in permissive mode.",
|
|
|
f09e2e |
+ __func__);
|
|
|
f09e2e |
+ break;
|
|
|
f09e2e |
+ default:
|
|
|
f09e2e |
+ fatal("%s: SELinux PAM variable setup failure. Aborting connection.",
|
|
|
f09e2e |
+ __func__);
|
|
|
f09e2e |
+ }
|
|
|
f09e2e |
+ }
|
|
|
f09e2e |
+ return;
|
|
|
f09e2e |
+ }
|
|
|
f09e2e |
+
|
|
|
017ff1 |
+ debug3("%s: setting execution context", __func__);
|
|
|
017ff1 |
+
|
|
|
017ff1 |
+ r = sshd_selinux_getctxbyname(pwname, &default_ctx, &user_ctx);
|
|
|
f09e2e |
+ if (r >= 0) {
|
|
|
f09e2e |
+ r = setexeccon(user_ctx);
|
|
|
f09e2e |
+ if (r < 0) {
|
|
|
f09e2e |
+ error("%s: Failed to set SELinux execution context %s for %s",
|
|
|
f09e2e |
+ __func__, user_ctx, pwname);
|
|
|
017ff1 |
+ }
|
|
|
f09e2e |
+#ifdef HAVE_SETKEYCREATECON
|
|
|
f09e2e |
+ else if (setkeycreatecon(user_ctx) < 0) {
|
|
|
f09e2e |
+ error("%s: Failed to set SELinux keyring creation context %s for %s",
|
|
|
f09e2e |
+ __func__, user_ctx, pwname);
|
|
|
f09e2e |
+ }
|
|
|
f09e2e |
+#endif
|
|
|
f09e2e |
+ }
|
|
|
f09e2e |
+ if (user_ctx == NULL) {
|
|
|
f09e2e |
+ user_ctx = default_ctx;
|
|
|
f09e2e |
+ }
|
|
|
f09e2e |
+ if (r < 0 || user_ctx != default_ctx) {
|
|
|
f09e2e |
+ /* audit just the case when user changed a role or there was
|
|
|
f09e2e |
+ a failure */
|
|
|
017ff1 |
+ sshd_selinux_send_audit_message(r >= 0, default_ctx, user_ctx);
|
|
|
f09e2e |
+ }
|
|
|
f09e2e |
+ if (r < 0) {
|
|
|
017ff1 |
+ switch (security_getenforce()) {
|
|
|
017ff1 |
+ case -1:
|
|
|
017ff1 |
+ fatal("%s: security_getenforce() failed", __func__);
|
|
|
017ff1 |
+ case 0:
|
|
|
f09e2e |
+ error("%s: SELinux failure. Continuing in permissive mode.",
|
|
|
f09e2e |
+ __func__);
|
|
|
017ff1 |
+ break;
|
|
|
017ff1 |
+ default:
|
|
|
f09e2e |
+ fatal("%s: SELinux failure. Aborting connection.",
|
|
|
f09e2e |
+ __func__);
|
|
|
017ff1 |
+ }
|
|
|
017ff1 |
+ }
|
|
|
f09e2e |
+ if (user_ctx != NULL && user_ctx != default_ctx)
|
|
|
017ff1 |
+ freecon(user_ctx);
|
|
|
f09e2e |
+ if (default_ctx != NULL)
|
|
|
f09e2e |
+ freecon(default_ctx);
|
|
|
017ff1 |
+
|
|
|
017ff1 |
+ debug3("%s: done", __func__);
|
|
|
017ff1 |
+}
|
|
|
017ff1 |
+
|
|
|
017ff1 |
+#endif
|
|
|
017ff1 |
+#endif
|
|
|
017ff1 |
+
|
|
|
017ff1 |
diff --git a/openbsd-compat/port-linux.c b/openbsd-compat/port-linux.c
|
|
|
017ff1 |
index 4637a7a..22ea8ef 100644
|
|
|
017ff1 |
--- a/openbsd-compat/port-linux.c
|
|
|
017ff1 |
+++ b/openbsd-compat/port-linux.c
|
|
|
017ff1 |
@@ -103,37 +103,6 @@ ssh_selinux_getctxbyname(char *pwname)
|
|
|
017ff1 |
return sc;
|
|
|
f09e2e |
}
|
|
|
f09e2e |
|
|
|
017ff1 |
-/* Set the execution context to the default for the specified user */
|
|
|
f09e2e |
-void
|
|
|
017ff1 |
-ssh_selinux_setup_exec_context(char *pwname)
|
|
|
f09e2e |
-{
|
|
|
017ff1 |
- security_context_t user_ctx = NULL;
|
|
|
f09e2e |
-
|
|
|
f09e2e |
- if (!ssh_selinux_enabled())
|
|
|
f09e2e |
- return;
|
|
|
017ff1 |
-
|
|
|
017ff1 |
- debug3("%s: setting execution context", __func__);
|
|
|
017ff1 |
-
|
|
|
017ff1 |
- user_ctx = ssh_selinux_getctxbyname(pwname);
|
|
|
017ff1 |
- if (setexeccon(user_ctx) != 0) {
|
|
|
017ff1 |
- switch (security_getenforce()) {
|
|
|
017ff1 |
- case -1:
|
|
|
017ff1 |
- fatal("%s: security_getenforce() failed", __func__);
|
|
|
017ff1 |
- case 0:
|
|
|
017ff1 |
- error("%s: Failed to set SELinux execution "
|
|
|
017ff1 |
- "context for %s", __func__, pwname);
|
|
|
017ff1 |
- break;
|
|
|
017ff1 |
- default:
|
|
|
017ff1 |
- fatal("%s: Failed to set SELinux execution context "
|
|
|
017ff1 |
- "for %s (in enforcing mode)", __func__, pwname);
|
|
|
017ff1 |
- }
|
|
|
f09e2e |
- }
|
|
|
017ff1 |
- if (user_ctx != NULL)
|
|
|
017ff1 |
- freecon(user_ctx);
|
|
|
017ff1 |
-
|
|
|
017ff1 |
- debug3("%s: done", __func__);
|
|
|
f09e2e |
-}
|
|
|
f09e2e |
-
|
|
|
017ff1 |
/* Set the TTY context for the specified user */
|
|
|
017ff1 |
void
|
|
|
017ff1 |
ssh_selinux_setup_pty(char *pwname, const char *tty)
|
|
|
017ff1 |
diff --git a/openbsd-compat/port-linux.h b/openbsd-compat/port-linux.h
|
|
|
017ff1 |
index e3d1004..8ef6cc4 100644
|
|
|
017ff1 |
--- a/openbsd-compat/port-linux.h
|
|
|
017ff1 |
+++ b/openbsd-compat/port-linux.h
|
|
|
017ff1 |
@@ -22,9 +22,10 @@
|
|
|
017ff1 |
#ifdef WITH_SELINUX
|
|
|
017ff1 |
int ssh_selinux_enabled(void);
|
|
|
017ff1 |
void ssh_selinux_setup_pty(char *, const char *);
|
|
|
017ff1 |
-void ssh_selinux_setup_exec_context(char *);
|
|
|
017ff1 |
void ssh_selinux_change_context(const char *);
|
|
|
017ff1 |
void ssh_selinux_setfscreatecon(const char *);
|
|
|
017ff1 |
+
|
|
|
017ff1 |
+void sshd_selinux_setup_exec_context(char *);
|
|
|
017ff1 |
#endif
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f09e2e |
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f09e2e |
#ifdef LINUX_OOM_ADJUST
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|
017ff1 |
diff --git a/platform.c b/platform.c
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|
017ff1 |
index 30fc609..0d39ab2 100644
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|
017ff1 |
--- a/platform.c
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|
017ff1 |
+++ b/platform.c
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|
017ff1 |
@@ -183,7 +183,7 @@ platform_setusercontext_post_groups(struct passwd *pw)
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|
017ff1 |
}
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|
017ff1 |
#endif /* HAVE_SETPCRED */
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|
017ff1 |
#ifdef WITH_SELINUX
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|
017ff1 |
- ssh_selinux_setup_exec_context(pw->pw_name);
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|
017ff1 |
+ sshd_selinux_setup_exec_context(pw->pw_name);
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|
017ff1 |
#endif
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|
017ff1 |
}
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|
017ff1 |
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017ff1 |
diff --git a/sshd.c b/sshd.c
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017ff1 |
index 7523de9..07f9926 100644
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017ff1 |
--- a/sshd.c
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|
017ff1 |
+++ b/sshd.c
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|
017ff1 |
@@ -2138,6 +2138,9 @@ main(int ac, char **av)
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|
f09e2e |
restore_uid();
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|
f09e2e |
}
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|
|
f09e2e |
#endif
|
|
|
f09e2e |
+#ifdef WITH_SELINUX
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|
|
017ff1 |
+ sshd_selinux_setup_exec_context(authctxt->pw->pw_name);
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|
f09e2e |
+#endif
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|
f09e2e |
#ifdef USE_PAM
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|
|
f09e2e |
if (options.use_pam) {
|
|
|
f09e2e |
do_pam_setcred(1);
|